Endless conveying means for paper-machines.



J. WOLF.

ENDLESS GONVEYIN G MEANS FOR PAPER MACHINES. APPLICATION FILED MAR.13, 1914.

1,131,766. Patented Manlfi, 1915.

Fig-1 r THE NORRIS PETERS co. PHOTO-LITHO.. WASHING TON D. I

JOI-IANN WOLF, OF BURG-ON-THE-WUPPEB, GERMANY.

ENDLESS CONVEYING MEANS FOR PAPER-MACHINES.

Specification of Letters Patent.

Patented Mar. 16, 1915.

Application filed March 13, 1914. Serial No. 824,572.

To all whom it may concern:

Be it known that I, J OHANN lVoLF, a subject of the German Emperor, and resident of Burg-on-the-W upper, Germany, have invented certain new and useful Improvements in Endless Conveying Means for Paper-Machines, of which the following is a specification.

This invention relates to an improved automatic device for regulating the proper working of endless roller-guided conveying means, such as strainers, dry and wet felt ribbons, of paper machines. Devices of this kind are already known, which at an irregular working of the conveying means are actuated by one or the other longitudinal edge of the latter striking against an abutment, which thereby operates a ratchet wheel, which is mounted on a screw-spindle carrying the bearing of the guiding-roller or the latter itself, in such a way that a corresponding adjustment of the guiding-roller happens in axial direction, whereby the conveying means are again returned to their proper working position. Said known devices have, however, the drawback that the longitudinal edges of the conveying means must firmly strike against the abutment in order to operate the device, whereby said edges become folded and thus damaged. With the improved device, a slight striking of the longitudinal edges of the conveying means against the abutment is suflicient for operating the device, owing to members being disengaged from their position of rest, upon the conveying means striking against the abutment, and then adapted to act upon the screw-spindle carrying the guiding-roller in such a way that a corresponding adjustment of the guiding-roller is eifected in axial direction. Thereby, the above-mentioned known drawbacks are overcome.

The accompanying drawing shows the improved device.

Figure 1 is a side elevation, Fig. 2 a front elevation, and Fig. 3 a plan View, of the same.

Between the upright walls a, a of the frame of the regulating device and in a race I) of the same, a guiding-member d is guided on a screw-spindle c, the bearing 6 for the guiding-roller w for the conveying means being turnably mounted on said guiding-member. To the top end of the wall a an arm f is pivoted, which is led through the wall a and on its projecting free end provided with a transverse double-lever g to which depending links it, h are pivoted and at their lower ends provided each with a pawl z, a". On the front end of the screwspindle two ratchet-wheels la, is with oppositely directed teeth are mounted, which are adapted to gear with said pawls 2', a".

On the front side of the wall a a vertical arm Z is fulcrumed and provided with a transverse double-arm m, which with its front ends embraces the links it, it in forked manner. Upon the arm Z assuming vertical position, the free end of the arm bears upon the arm Z and a cam-disk n on the axle of the guiding-roller a: can freely move heneath an arm 0 fixed on the horizontal arm 7. Upon the arm Z being, however, turned to one or the other side, one or the other of the two pawls 2', z" are removed from the ratchet-wheels so that only one pawl engages with one or the other ratchet wheel is or is. At the same time, arm f bears with its arm 0 upon the cam disk 11, whereby the latter, while rotating, moves the free end of the arm f up and down. Thereby, the ratchet wheel which is in engagement with its pawl, is operated. By the consequent rotation of the screw-spindle, the guidingroller w is adjusted in axial direction and the conveying means are returned to their proper working position.

The adjustment of the arm Z happens by the conveying means striking with one or the other longitudinal edge against an abutment consisting of a support 8 with loose anti-friction rollers 25 and which is arranged on both ends of rod 1" transversely and movably mounted above the conveying means, so as to face the two longitudinal edges of the same. In the example shown, the rod 7' is connected with the arm Z by links 79; it may, however, be also directly connected thereto. According to whether the conveying means strike at one or the other side against the abutment, a displacement of rod 1' and thus of arm Z happens, which results in an operation of the regulating device. Upon the conveying means striking against the abutment, the anti-friction rollers (6 prevent1 the conveying means from being damage It may happen that at an eventual disturbance in the working of the conveying means the actuated regulating device does not become disengaged quickly enough by a continued engagement of the pawls with the ratchet Wheels, whereby the guiding-member (Z would firmly run against the wall 0: or a. To avoid this, on the wall a a lever 72 and on the wall a a system of levers w are arranged. The front ends of these levers are located between arms h, it and ratchetwheels 7c, is and their rear ends in the way of the movement of the guiding-member (Z. Thus, upon the above-mentioned case happening, the guiding-member d abuts against the rear end of the lever '0 or 'w, whereby the pawl i or 91 becomes disengaged from the ratchet wheel is or k.

What I- claim, is:

An automatic device for regulating the proper working of roller-guided conveying means for paper machines, comprising, in combination, a rod transversely andmovably arranged above the conveying means, an abutment on each end of the rod to face the two longitudinal edges of the conveying means consisting of a support and ant1 friction" rollers therein, a vertical pivotal arm connected with said rod, a horizontal pivotal arm having a downward extension and normally bearing with its free end upon said vertical arm, a guiding-roller for said conveying means, a cam-disk on the axle of said guiding-roller adapted to move freely beneath the downward extension of said horizontal arm but to come in contact therewith upon the vertical arm being turned by the conveying means striking against said abutments, two depending links on the free end of said horizontal arm, a forked arm on said vertical lever to embrace the two depending links, a pawl on the lower end of each link, ratchet-wheels with oppositely directed teeth adapted to alternately gear with one of said pawl's upon the cam-disk being in contact with the downward extension of said horizontal arm, a screw-spindle to carry said ratchet-wheels on its free end, a guiding-member on said screw-spindle, a bearing for the aXle of the giiiding-roller turnabl'y mounted on said guiding member, and means to automatically disengage said pawls from the ratchet-wheels upon the guiding-member attaining its two end positions on the screw-spindle, snbstantially as and for the purpose set forth.

J OHANN WOLF. Ens] WVitI'iess'es":

HELEN Narnia,

ALBERT NI'JFER.

Co'pl'ei of this patent may be obtained for five cents each, b'y addr'essing tlie' *Comniissionr of Patents,

Washington, IT. C 

